Benchmark: canvasperf - MeasureThat.net

HTML Preparation code:

<canvas id="canvas" width="400" height="400"></canvas>

Script Preparation code:

var canvas = document.getElementById('canvas');
var ctx = canvas.getContext("2d");

Tests:

float
ctx.beginPath(); ctx.fillStyle = '#000'; ctx.arc(70.5 + Math.random(), 70.5 + Math.random(), 6, 0, Math.PI * 2, true); ctx.fill();
int
ctx.beginPath(); ctx.fillStyle = '#000'; ctx.arc(~~(50.5 + Math.random()), ~~(50.5 + Math.random()), 6, 0, Math.PI * 2, true); ctx.fill();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
float
int

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Measuring performance differences in JavaScript is crucial for optimizing web applications and ensuring that they perform well across various browsers, devices, and platforms.

The provided benchmark measures the performance difference between using floating-point numbers (`float`) and integer values (`int`) when drawing circles on a 2D canvas. The test case uses the `Math.random()` function to generate random coordinates for the circle's center.

Let's break down the options being compared:

1. **Floating-point numbers (float)**: Using `Math.random()` to generate random floating-point numbers for the circle's center x and y coordinates. This allows for more precise control over the circle's position.
2. **Integer values (int)**: Using the bitwise NOT operator (`~~`) to truncate the results of `Math.random()` to integers, effectively rounding down to the nearest whole number. This approach can be faster but may introduce minor precision errors.

**Pros and Cons:**

*   Floating-point numbers:
    *   Pros:
        +   More precise control over circle position
        +   Can handle cases where a more accurate representation is necessary (e.g., high-resolution graphics)
    *   Cons:
        +   May be slower due to the overhead of floating-point arithmetic
        +   Requires more CPU cycles to perform calculations
*   Integer values:
    *   Pros:
        +   Faster performance, as integer arithmetic is generally quicker than floating-point operations
        +   Can result in faster execution times for these specific test cases
    *   Cons:
        +   May introduce minor precision errors due to rounding down
        +   Less suitable for applications requiring high precision

The choice between `float` and `int` ultimately depends on the specific requirements of your application. If you need precise control over circle positions or are working with high-resolution graphics, using floating-point numbers may be a better option. However, if speed is crucial, using integer values could be a more suitable choice.

Now, let's look at some additional considerations:

*   **Library usage**: The benchmark doesn't appear to use any external libraries beyond the standard JavaScript library and HTML5 canvas API.
*   **Special JS features or syntax**: There are no special JavaScript features or syntax used in this benchmark. It only utilizes standard language constructs.

For those looking for alternatives, there are other tools available for measuring JavaScript performance:

1.  **Benchmarking libraries**:
    *   Benchmark.js: A popular library for creating and running benchmarks.
    *   Benchmark.chai: A plugin for Chai that provides a simple way to create benchmarks.
2.  **JavaScript profiling tools**:
    *   Chrome DevTools: Provides a built-in profiler for analyzing JavaScript performance in Google Chrome.
    *   Firefox Developer Edition: Offers a built-in profiler and various other development tools.
3.  **Third-party benchmarking services**:
    *   BrowserBench: A tool that allows you to create and run benchmarks across multiple browsers.
    *   WebPageTest: A web performance testing service that provides detailed analysis of page load times and performance.

These alternatives can help you create more comprehensive benchmarks, analyze performance in different contexts, or simply gain a better understanding of your application's execution speed.

Related benchmarks:

canvasperf (version: 0)

Comparing performance of: float vs int

Created: 8 years ago by: Guest

Jump to the latest result

float

int

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):